1 /* vi: set sw=4 ts=4: */
2 /* daemon implementation for uClibc
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
17 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
39 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
40 * Modified for uClibc by Erik Andersen <andersee@debian.org>
49 #if defined __ARCH_HAS_MMU__
50 libc_hidden_proto(open)
51 libc_hidden_proto(close)
52 libc_hidden_proto(_exit)
53 libc_hidden_proto(dup2)
54 libc_hidden_proto(setsid)
55 libc_hidden_proto(chdir)
56 libc_hidden_proto(fork)
58 int daemon( int nochdir, int noclose )
74 /* Make certain we are not a session leader, or else we
75 * might reacquire a controlling terminal */
82 if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
83 dup2(fd, STDIN_FILENO);
84 dup2(fd, STDOUT_FILENO);
85 dup2(fd, STDERR_FILENO);